[libav-api] Time Code in an MOV

Michael Kannard Michael.Kannard at encorehollywood.com
Fri Nov 15 00:10:52 CET 2013

Hello, I am new to LibAV.

I am writing an MOV file, and having problems getting time code embedded in the file.

I am currently using the windows binaries.

Everything with the file comes out great, but no time code is available in quick time.

I've seen some code posted that adds a dictionary item of "timecode" to the metadata of the video stream, so I've added it here, but with no success.

Thanks to anyone who has some ideas.

AVStream * addVideoStream(AVFormatContext * formatContext, int width, int height, const char * videoCodec, const char * videoCodecProfile, const char * timeCode)


    AVStream * stream;

    AVCodec * codec;

    AVCodecContext * codecContext;

    codec = avcodec_find_encoder(AV_CODEC_ID_PRORES);

    codecContext = avcodec_alloc_context3(codec);

    codecContext->flags = CODEC_FLAG_GLOBAL_HEADER;

    stream = avformat_new_stream(formatContext, codec);

    stream->codec = codecContext;

    int set = av_dict_set(&stream->metadata, "timecode", timeCode, 0);

    codecContext->codec_id = AV_CODEC_ID_PRORES;

    codecContext->channels = 0;

    codecContext->width = width;

    codecContext->height = height;

    codecContext->time_base.den = 23976;

    codecContext->time_base.num = 1000;

    codecContext->codec_tag = getFourCc(videoCodec, videoCodecProfile);

    codecContext->pix_fmt = codec->pix_fmts[0];

    return stream;


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